Oriental Musical Instrument has been producing EASTTOP brand harmonica since 2007. In recent years, it has carried out significant adjustment and reform on the machinery and equipment, gradually phased out the old machines and introduced advanced manufacturing equipment, automation devices and robots. The strong hardware strength has effectively improved the professional level of production technology. Reform and innovation never stop, the research and development team of Eastern Musical Instruments on the existing manufacturing technology, process, design for perfection again, with the purpose of "the needs of Qin friends, is our pursuit", adopt the suggestions of Qin friends dribs and DRBS, continuous improvement and perfection, finally... The latest thin polyphonic harmonica is the EASTTOP T2406S 2.0, T2403 2.0, T2406K 2.0, as well as the fashionable upgraded Chromatic Dreamer 2.0